Genre
Amateurs' manuals
1
Analysis
1
Case studies
7
Classification
1
Computer network resources
60
Congresses
1
Electronic books
454
Formulae
4
Handbooks, manuals, etc
18
Internet resources
317
Internet videos
1,053
Observations
1
Outlines, syllabi, etc
24
Problems, exercises, etc
5
Short films
927
Standards
1
Study guides
2
Tables
6
Terminology
2
research
1